All Cherokee Dana 35 axles are 35c. The 'C' does not stand for c-clip, it stands for "Customer," which is a Dana way of identifying an axle that is shipped to the customer only partially built. The customer completes the assembly.
The XJ Dana 35 from 1984 through 1989 was a non-c-clip design. The axle shafts are held in place by a retaining plate that bolts to the flange on the outer end of the axle tube with 4 bolts. With this design, it is not necessary to open the differential to remove the shafts and replace the outer bearings.
The c-clip Dana 35 uses a c-clip on the inner end to retain the shaft. To remove a shaft, you must first remove the differential cover and disengage the c-clip from the end of the shaft.
Ring gears and pinion gears interchange between/among all years. I believe carriers interchange between/among all years. The spider gears are different in the c-clip axles, with a space machined to accept the c-clip.